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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: robertglines1 on June 16, 2010, 01:36:08 PM

Title: 8-V92 black smoke
Post by: robertglines1 on June 16, 2010, 01:36:08 PM
 ???A friend just called..He's on road and his 90 prevost 8V92 DDecII just started emitting black smoke...I told him easiest first ck air cleaner..2nd turbo(exhaust to turbo leak)--then blower----then injector--any other quick checks one can think to help diagnose problem..
Title: Re: 8-V92 black smoke
Post by: luvrbus on June 16, 2010, 02:07:56 PM
Could be his turbo boost sensor or turbo also the rest you got it covered



good luck
Title: Re: 8-V92 black smoke
Post by: Bill B /bus on June 16, 2010, 03:40:58 PM
Black smoke is always not enough air. Check turbo piping for a loose joint or hole. Could be turbo itself but probably not. Suggest he pull exhaust pipe at the turbo and check that turbo wheel is attached and spins freely without slop.

Good luck
Bill
Title: Re: 8-V92 black smoke
Post by: luvrbus on June 16, 2010, 03:46:32 PM
If he blew a injector tip on his 8v92 it will blow plenty of black smoke from over fueling that 1 cylinder



good luck
Title: Re: 8-V92 black smoke
Post by: robertglines1 on June 16, 2010, 04:54:13 PM
Just got back...fuel in oil so prob injector..will ck turbo wheel before taking valve covers off..thanks for come back it helps me . . reason Thur problems.. Bob , Sean thanks you also
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